Exhibit 12.1
COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

	Year ended December 31,														Three months ended March 31
	2010		2011			2012			2013			2014			2015
	(Amounts in thousands of dollars)
EARNINGS
Pre-tax earnings from continuing operations		1,869		(12,610	)		(19,163	)		(15,437	)		(9,955	)		(4,311	)
Add back:
Fixed charges		79		78			81			69			74			21
		1,948		(12,532	)		(19,082	)		(15,368	)		(9,881	)		(4,290	)
FIXED CHARGES
Interest expensed and capitalized		3		4			5			-			-			2
Estimate of interest within rental expense		76		75			76			69			74			18
		79		79			81			69			74			21
RATIO OF EARNINGS TO FIXED CHARGES FOR F-3		24.58x		(12,611	)		(19,163	)		(15,437	)		(9,955	)		(4,311	)